Air-pump.



0. E. L. LIPMAN. I AIR PUMP. APPLICATION IILED MAY 19, 1913.

- Patented Apr. 7, 191% 5 110 1 ZZ J J5 J5 V \i\ 2 1'0 n 10 11 14 17 J IZ 7 9 y. I I 1 w, w 1

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ofgseparate valves fereach cylinder are" with the "eadofithe pumpg'andto, construct TED .rnnmsgdomrnnr, ornnnorr,

. a citizen of the United States, residin fat Be1oit,-;. in' the countyof; Rock and the tate "5 ofrr seonsim'flfhajvefinvented TneW. f-Irnp'roveinsents Air-Pumps,

he following is aspecificatien; j j, .1 vention pumps and its object theconstruction of a ivalye head for the pump in which a 7 novel ,type

' iiis'fret,

' bui1t.inand entirely carried by the head, sothat in the manufactureofthe pnmpthe' valve head and mechanism niay bemade '15 up entirely"separate hjom the restofthe' "pump and"afssembled.. in-jworkingcondition before-'vbeingplaced up o'n 'the pump; vwi Theffurther objectis provide amp to cover entirely-the valie mechanism carried by thehea'dlsothat same will be protected from anyjtoreignamatteicoming-inContact Jena-esp fthsides" lying in-closeproximity- {withilth "de'sofF'thepump so as to allow a e w passage therebetween through aw chairmay be'drawn to the intake valves 7 h .In the accpmpanyingdrawingsrFigure 1'.

. 'v is a side view of a pump with'igylimproved -;vnve.,-hesdsa ;1mechanism applied thereto, the u'ppe'r portionfthereoflceing shown in, sa ion tekeetqntt flhn s'- .24- -Fig".'2.is alea section takenonthellinc' ,2- 2 ofjFig. 1.; Fig'.- 3 isa verticaltrans-- verses ectiontaken on the line 33 ofF g. 2. t t;- -'rhe;eir pump here'disclosed "isespec ally 7 -;*-adapted for use in connection with automobiles infurnishing air for-selfstarting systems, filling tires, etc., andforsuch uses as a smalltype of multi-cylinder-pump is re- The pumpcomprises a crank case 4, cylinder' casing 5 and the several. operativeparts such. as pistons, crank-shaft, etc, co-

I operating with same to produce an operative pump; The top of thecasing .5 is ground oif flush and a head 6 is screwed thereupon byscrews 7; This head adapted to carry the valve mechanism, forms the headfor .the cylinders and carries a separate intake and exhaust valve foreach cyhnder in sucha manner as to allow the pistons to be moved I intheir-up stroke, close to the head 6 to discharge a maximumainount ofair from thethe'valve stems an if which have intake through the passagesas fresh cylinders; The intake valves are of the puppet valve type,theirstems 'being wlsconsm, A conronn'rxon OF wIsconsmzi- Sm iefi m mPatented ni naieia. App1icationfi1e|illay iame. Sex-18.1110; 768,580.

in vei'tical su p rts e with v the-'hea d'fi; an'dthe valyesbeingyiel 1upon-their seats by coiled mterposedbetween collars 11 mounted upon (1theintake port-walls-12 '60 ports 13 therein. One of these-puppetlvalvesis positioned above each *cyhnderandit will be noticed thatupon the'ufivstrokefwhen said valves are inoperative) t atithe yalve is flushwiththecylinder top. .66 An exhaust'or discharge passage 14 leadslongitudinally facrossj the cylinder heads =ha mg'a'communicating port15 witheach' cylinder. The discharge valves at each of' said-ports. einthe form-of ball lift or.7o *check' valves with balls 1-6 seated inports 15 :andiflheld yicl'dingly jposition i 17 mounted upon the balls,the sprangs being held in position by thevrecessed ca s18 whicharescrewedinto the casing-o pas- 75 age 14. The end--19 of said passage isadapted to form-a: w; means to whicha lead-of pipe may be'conn'ected toconducttheair compressed bythe pump to a y desired point as 1188. a, capseems. so

21depend .ing' from its top and resting" jupon the idischarge passagecasing,'screw s 22 through-said lugs being used to holdthe cap fixedupon the pump head, and the cap having side walls 23 depending from itssfi $91 Said-swells :being positioned close to the .sidesiof the pump"and valve head, but al- V lowing an air passage 24: intermediate the capand pump, and said walls extending down over thepump head to such adistance that said air passage about the pump head has. a. depth of asufficient-degree to keep foreign particles coming in contact with the apump head from being drawn upward 1' air is being to the intake valves.a

In' the operation of the pump,when' the pistons are reciprocated, onthedown stroke thereof air will be drawn through the intake valves 8 by wayof, the passages 24 and'loo ports 13, to'thecylinders, the ball valvesbeing held seated by the suction and also by their springs 17, and uponthe u strokes of the 'istons the air the cy ders will be orced outthrough ports 15 and passage 14, at a pressure to be utilized forvarious;

purposes. It will be seen that in this valve construction a tensional sring force is always upon'the valvestoold them closed, and also when thepump is in operation ad- 11]] construction of the pump, during themanufacture thereof, to be performed entirely upon the valve head, alsoallowing the valve mechanism to be assembled in an operative conditionbefore being applied to the pump.

To protect the valve mechanism and to guard against any particles offoreign matter falling or coming in contact with the pump head while thepump is in operation,

rom being drawn into the valve mechanism, I utilize my novel form of pumcap which entirely incloses the valve mec amsm and provides arded' airpassages leading to the vintake va ves. In will be seen thatthisconstruction not only does away with separate casings for intakevalves and screens for keeping dirt from being drawn through same, butalso afiords an eificient guard for the entire pump head and mechanism.

I claim as my invention- I 1. In an air pump, the combination with acylinder and piston therefor, of a head forming a top for the cylinder,an air intake and exhaust valve located in the head,

the intake valve drawing from the atmosphere and the exhausg valvehaving a dis-- --charge passage, and a cap inclosing said valves andcarried by the head, the cap leaving an opening intermediate the pumphead and cap wherethrough air may pass to said intake valve.

2. In an air pump, the combination with a cylinder and piston therefor,of valve mechanism located on the head of the cylinder ineluding an airintake valve adapted to draw air from theatmosphere, and a casingcovering said valve mechanism and having side walls disposed adjacentthe sides of said valve mechanism, said side walls forming withv thevalve mechanism an air passage through which air may passtosaid intakevalve.

t 3. In an air pump, the combination with a cylinders-and pistontherefor, of valve mechanism located on the head of the cylinderincluding an air intake' valve adapted to draw air from the atmosphere,and a casing covering said valve mechanism and pump head, the casinghaving depending side walls positioned adjacent the sidesof the pumphead and forming with said head, an air passage through which air maypass to said intake valve.

4.7111 an air pump the combination with a cylinder and piston therefor,'of valve mechanism located on the head of the cylinder including an airintake valve adapted'to draw air from the atmosphere, and a casingcovering said valve mechanism with sides of the casing spaced from thepump and forming with the-pump substantially vertical air -passagesthrough which air may be-drawn to said intake valve. 7 1

In testimony whereof I have hereunto set 'my hand in presence of twosubscribing witnesses. v

' CARL E. L. LIPMAN. Witnesses: V

W. H. Armour), T. D. Woonsmr.

